GRAYDON Carter doesn’t know what Rupert Everett is talking about. The British actor, now on Broadway in “Blithe Spirit,” told The Daily Beast: “He’s certainly not the buffoon he looks like. This is the most amazing thing I found out about him. I was once staying at a hotel, and I was in the room directly under his. He is an amazing f – – – — and you can quote me on this. The screams coming from the woman were some of the purest sounds of pleasure I’d ever heard.” A rep for the Vanity Fair editor told Page Six, “Graydon’s still trying to figure out who was using his room.”